Fat & thin

Daddy asked Annabelle:"Is mummy fat or thin?"
Annabelle replied:"Thin"
Daddy asked Annabelle:"Is daddy fat or thin?"
Annabelle replied:"Fat"
Daddy asked Annabelle again:"Is Annabelle fat or thin?"
She replied:"Fat"
OK, mummy confirmed that Annabelle learnt the opposite words very well: Fat & Thin... hahaha